Results 261 to 270 of about 166,205,387 (301)

Effect of substitution degree on carboxymethylcellulose interaction with lysozyme

Food Hydrocolloids, 2017
Substitution degree (DS) of carboxymethylcellulose (CMC) is one of the critical internal factors for affecting CMC interacting with other polyelectrolytes. The assembly of lysozyme (Ly) and CMC with various DS were analyzed with turbidities, zeta potentials, intrinsic fluorescence, Fourier transform infrared spectra and circular dichroism. It was found
Zhenshun Li, Yuntao Wang, Wei Xu
exaly   +2 more sources

THE DETERMINATION OF THE DEGREE OF SUBSTITUTION OF CARBOXYMETHYLCELLULOSE OVER THE ENTIRE SUBSTITUTION RANGE

Canadian Journal of Research, 1950
The published methods for the determination of the degree of substitution of carboxymethylcellulose were found to be unsatisfactory for samples of high degree of substitution. Two methods were developed: one comprises the removal of the impurities from crude sodium carboxymethylcellulose by dialysis or washing with ethanol and determination of the ...
R. R. McLaughlin, J. H. E. Herbst
openaire   +1 more source

Influence of degree of substitution of cyclodextrins on their colligative properties in solution

Journal of Pharmaceutical Sciences, 2001
The purpose of this study was to investigate the effect of the total degree of substitution (TDS) on the colligative properties of substituted cyclodextrins (CDs; i.e., beta- and gamma-cyclodextrins substituted with sulfobutylether or hydroxypropyl groups) in solution.
S, Proniuk, J, Blanchard
openaire   +2 more sources

Influence of the Guest, the Type and Degree of Substitution on Inclusion Complex Formation of Substituted β-Cyclodextrins

Talanta, 1999
The stability of inclusion complexes (i.e. the measure of molecular recognition between a guest and (beta-cyclodextrin, CD) is highly influenced by the fit of the guest into the cavity of the host and by secondary bonds among the functional groups getting in close connection. The guests themselves influence these interactions by their sizes, shapes and
A, Buvári-Barcza, L, Barcza
openaire   +2 more sources

Adsorption of Arabinoxylan on Cellulosic Surfaces: Influence of Degree of Substitution and Substitution Pattern on Adsorption Characteristics

Biomacromolecules, 2011
This study presents results that show that the fine structure of arabinoxylan affects its interaction with cellulosic surfaces, an important understanding when designing and evaluating properties of xylan-cellulose-based materials. Arabinoxylan samples, with well-defined structures, were prepared from a wheat flour arabinoxylan with targeted enzymatic ...
Tobias, Köhnke, Asa, Ostlund, Harald, Brelid   +2 more
openaire   +2 more sources

Acetylation of Potato Starch to a Low Degree of Substitution

Starch - Stärke, 1980
AbstractThe results of a kinetic investigation of the base‐catalyzed acetylation of potato starch slurries by vinylacetate are reported. Simultaneously with the reaction part of the vinylacetate is hydrolyzed, which reaction is also catalyzed by bases.
Jetten, W., Stamhuis, E.J., Joosten, G.E.H.   +2 more
openaire   +1 more source

Acid hydrolysis of carboxymethylcellulose of low degree of substitution

Colloid & Polymer Science, 1990
Cotton cellulose was swollen in a sodium hydroxide solution and carboxymethylated by a two-bath method for different periods of time for each process. The kinetics of acid hydrolysis and the crystallinity of the swollen and carboxymethylated samples were measured.
J. Borsa, I. T�nczos, I. Ruszn�k
openaire   +1 more source

Permercuration of substituted ferrocenes: assessment of the degree of mercuration

Journal of Organometallic Chemistry, 1996
Abstract Mono- and disubstituted ferrocenes react with excess mercuric acetate (at least eight or nine equivalents) to afford highly insoluble mixtures of polymercurated ferrocenes. In the case of 1,1′-dimethylferrocene, the mercurated product is composed of minor amounts of the octamercurated and hexamercurated ferrocenes, with the heptamercurated ...
Sally A. Kur, Charles H. Winter
openaire   +1 more source

FTIR determination of the degree of molar substitution for hydroxypropyl chitosan

Carbohydrate Polymers
We developed and validated a novel Fourier transform infrared (FTIR) method to determine the degree of molar substitution (MS) for hydroxypropyl chitosan (HPCS) using nuclear magnetic resonance (1H NMR) as a reference, and investigated the factors influencing the MS assay.
Fang, Liu, Yinchun, Liu, Youli, Guo, Jianrui, Liu, Jingwen, Dong, Tengbin, Wang, Di, Hao, Yongqin, Zhang   +7 more
openaire   +2 more sources

Commercialization of skin substitutes for third-degree burn wounds

Trends in Biotechnology
Technological advances have increasingly provided more and better treatment options for patients with severe burns. Here, we provide a bird's-eye view of the product development process for third-degree burn wounds with considerations of the critical interaction with regulatory bodies, existing technological gaps, and future directions for skin ...
Weng Wan, Chan, Quang Bach, Le, May Win, Naing, Deepak, Choudhury   +3 more
openaire   +2 more sources